They just clog ours. I put ice and citrus in the disposal sometimes to freshen it up, but have never had a problem with the sharpness of the blades. However, a quick google search advised just that (ice and citrus) to sharpen the blades as well:http://www.ehow.com/how_4529424_shar...al-blades.html

I used to put them in the garbage disposal until I saw a PSA from the local utility saying not to. They didn't say why, but I would assume they must be bad for the sewer pipes or something. I've got a compost pile now anyway, so that's where they go now.

I used to put them in the garbage disposal until I saw a PSA from the local utility saying not to. They didn't say why, but I would assume they must be bad for the sewer pipes or something. I've got a compost pile now anyway, so that's where they go now.

Its because the only think worse than aligators in the sewer is aligators jazzed up on cafeine in the sewer.